Word Count : 311

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To determine whether the equilibrium will shift towards the reactants' side when the concentration of SO₂ is doubled, we compare the reaction quotient \( Q_c \) with the equilibrium constant \( K_c \). ### Step 1: Write the Expression for \( K_c \) For the reaction: \[ 2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g) \] The equilibrium constant expression is: \[ K_c = \frac{[SO_3]^2}{[SO_2]^2 [O_2]} \] Given that \( K_c = 245 \) at 100 K, and the equilibrium _____ _______ _________ _____ _________ _____ ___ _________ _____ ______ ______.
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